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DAWSON WATER WORKS

Iowa — Community Water System — PWSID: IA2525010

System Information

PWSIDIA2525010
System NameDAWSON WATER WORKS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 27, 1979
Last ReportedDec 19, 2025

Location & Contact

StateIowa
CityDAWSON
ZIP Code50066
AddressATTN LANETTE WEBB WATER OPERATOR
OrganizationDAWSON WATER WORKS
Phone515-979-6728

Population & Service

Population Served116
Service Connections81

Drinking Water Violations (111)

This water system has 111 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2025 Sep 30, 2025 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Archived Sep 30, 2025 Synthetic Organic Chemicals
Jul 1, 2025 Jul 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Jul 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Jul 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Jul 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Jul 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
May 1, 2025 May 31, 2025 Lead and Copper Rule MR No No — TT — Archived May 31, 2025 Lead and Copper Rule
May 1, 2025 May 31, 2025 Lead and Copper Rule MR No No — TT — Archived May 31, 2025 Lead and Copper Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 31, 2024 Consumer Confidence Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 31, 2024 Consumer Confidence Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 31, 2024 Consumer Confidence Rule
Apr 1, 2024 Jun 30, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2024 Nitrate Rule
Apr 1, 2024 Jun 30, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2024 Nitrate Rule
Apr 1, 2024 Jun 30, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2024 Nitrate Rule
Apr 1, 2024 Jun 30, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2024 Nitrate Rule
Nov 19, 2023 — Public Notice Other No No — — — Resolved Oct 31, 2024 Public Notice Rule and Revised PN Rule
Nov 19, 2023 — Public Notice Other No No — — — Resolved Oct 31, 2024 Public Notice Rule and Revised PN Rule
Nov 19, 2023 — Public Notice Other No No — — — Resolved Oct 31, 2024 Public Notice Rule and Revised PN Rule
Nov 19, 2023 — Public Notice Other No No — — — Resolved Oct 31, 2024 Public Notice Rule and Revised PN Rule
Apr 1, 2023 Jun 30, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2023 Nitrate Rule
Apr 1, 2023 Jun 30, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2023 Nitrate Rule
Apr 1, 2023 Jun 30, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2023 Nitrate Rule
Apr 1, 2023 Jun 30, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2023 Nitrate Rule
Jul 1, 2020 Sep 30, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2020 Nitrate Rule
Jul 1, 2020 Sep 30, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2020 Nitrate Rule
Jul 1, 2020 Sep 30, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2020 Nitrate Rule
Jul 1, 2020 Sep 30, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2020 Nitrate Rule
Jul 1, 2020 Sep 30, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2020 Nitrate Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Oct 2, 2013 Consumer Confidence Rule
Jun 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Jul 17, 2007 Lead and Copper Rule
Jun 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Jul 17, 2007 Lead and Copper Rule
Jun 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Jul 17, 2007 Lead and Copper Rule
Jun 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Jul 17, 2007 Lead and Copper Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1997 Total Coliform Rule
Oct 1, 1996 Dec 31, 1996 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1996 Nitrate Rule
Oct 1, 1996 Dec 31, 1996 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1996 Nitrate Rule
Oct 1, 1996 Dec 31, 1996 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1996 Nitrate Rule
Apr 1, 1993 Jun 30, 1993 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 1993 Nitrate Rule
Apr 1, 1993 Jun 30, 1993 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 1993 Nitrate Rule
Apr 1, 1993 Jun 30, 1993 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 1993 Nitrate Rule
Apr 1, 1993 Jun 30, 1993 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 1993 Nitrate Rule
Apr 1, 1993 Jun 30, 1993 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 1993 Nitrate Rule
Jul 1, 1992 Jul 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1992 Total Coliform Rule
Jul 1, 1992 Jul 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1992 Total Coliform Rule
Jul 1, 1992 Jul 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1992 Total Coliform Rule
Jul 1, 1991 Jul 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1991 Total Coliform Rule
Jul 1, 1991 Jul 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1991 Total Coliform Rule
Jul 1, 1991 Jul 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1991 Total Coliform Rule
Jul 1, 1991 Jul 31, 1991 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1991 Total Coliform Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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